medical Definition of therapeutic window
1
: the range of dosage of a drug or of its concentration in a bodily system that provides safe effective therapy
- the narrow therapeutic window…the effect may go from therapeutic to toxic with an increase of just 10 micrograms per milliliter [in] blood concentration
- —Lisa Davis
2
: a usually short time interval (as after a precipitating event) during which a particular therapy can be given safely and effectively
- has a narrow therapeutic window: the drug must be given within three hours of a stroke in order to be effective
- —Genesis Report-RX
